Mold



MOLD

A Filed Jar. 31, 1924 2 shmsfsneet 1 Patented F eb. 10, `1925.V

PATENT OFFICE.V

JOHN F. CASEY, O'F PORTLAND, OREGON.

MOLD.

Application filed January 31, 1,924. Serial No. 689,656.

To all 'wh-0m t may concern.' i

Be it known that I, JOHN F. CAsEY, a citizen of the United States,residing at Portland, county of Multnomah, State of Oregon, haveinvented certain new and useful Improvements in Molds, of which thefollowing is a specification. T

My invention relates to molds in general, and particularly nto. moldsadapted for molding concrete shapes and ythe like, the object being toprovide a device whereby concrete shapes, especially hollow tile, may

vbe produced cheaply. l

I accomplish the above object by means panying drawings, which are apart of this application for Letters Patent, like characters indicatinglike parts throughout the several views thereof, and in which:

Fig. 1 is a perspective View of the patternfand pattern board.

Fig. 2 is a perspective view of the cores and core board.

Fig. 3 is a perspective view of the stripping plate.

Fig. 4L is a fragmentary perspective view of the core guide.

Fig. 5 is a perspective view of the filler frame. y

Fig. 6 is a perspective view of the `finished product.

Figs. 7 to 15 inclusive are sectional perspective views of the assembleddevice in various steps of its use.

In general my device consists of a hollow pattern constructed integralwith a pattern board; a plurality of cores constructed integral with acore board; a stripping plate;

and a flask; these parts being of novel con-` struction, and cooperatingto form the complete device. y The pattern is a hollow formcorresponding to the form to be molded, and inV the case of hollow tilewhich is illustrated in the drawings, is a vhollow rectangular member 16secured upon a pattern board 17. `To prevent sand entering the patternduring the ramming up process I provide a cover 18 for the pattern, saidcoveritting into a rabbet in the pattern as shown in Figs. l and 7.

Thefcore is a plurality of piiismatie forms 19 secured upon a core board20; the core guide being a board 21 containing a pluof the constructionillustrated in the accom-` rality of orilices 22 corresponding in shape,

number, and position to the-cores 19.

The stripping plate isv preferably constructed of metal, Vand consistsof a plate 23 having an orifice therein adapted to exactly 'fit overthepattern 16, and having beveled edges at said orifice, as shown at 24;in Fig. 3. Said beveled edges coincide with the juncture line of thepatternfand the pattern board when the stripping plate is in position,as shown in Figs. 7, 8 and 9.

The flask is a rectangular 4prismoid having flanges projecting fromopposite edges at both top and bottom, the flask be* ing designated by25 and the flanges by 26 in Figs. 7 to 14 inclusive.

The liller frame is a rectangular' frame 27, the orice in whichcorresponds to the orifice in the top of the. flask 25, and thethickness is the same thethickness or' the stripping plate 23.

The form of the product produced by this equipment is shown in Fig. 6,being a hollow rectangular building tile of the usual construction, butit will be understood that suitable changes may be made in the pattern16 and the cores 19 for manufacturing various other shapes.

The various members just described are each provided with suitable dowelholes for dowelling them together in their respective positions when inuse, as shown in Figs. 7 to 14 inclusive.

In use I place the pattern board upon the floor or bench with thepattern projecting upward therefrom, as shown in Fig. 7, and with thepattern cover 18 in place. The stripping plate 23 is then placed uponthe pattern board, and the flask placed thereupon, as shown in Fig. 7.Sand is then rammed into the flask, and slicked olf even with the top ofthe flask, as shown in Fig. 7. The cover 18 is then removed, and thecore guide 21 placed in position upon the flask top, `as shown in Fig.8. rlhe cores 19 are then inserted through the orifices 22 in the coreguide until the core board 20 lies upon the core guide 21, as shown inFig. 9, the cores being of sufficient length to contact with the patternboard 17. The mold is then turned over as shown in Fig. 10.

The pattern board and pattern are then withdrawn, and concrete pouredinto the mold, as shown in Fig. lil, the top of the molded torni beingslicked off even with the stripping plate 23. rlhe stripping plate isthen removed, leaving the mold as shown in F ig. 12, with the top oi themolded product projecting above the top of the Hask a distance equal tothe thickness ot the stripping plate. The iller trame 2T is then placedin position upon the ilask, and the space within said frame is lilled inwith sand, and the mold is covered with a board 28, as shown in Fig. 13.

The mold is then turned over into the position shown in Fig. 11, and thecores 19 and core board 2O removed, as are also the core guide 21, flask25, and ller frame 27. This leaves the mold in the shape shown in Fig.15, with the castI form surrounded by the mold sand upon the board 29.It may then be removed from the molding Hoor to a suitable place forsetting and drying.

My invention may be made ot' any size, and constructed of any materialdeemed convenient and suitable vt'or a device ot this character, andwhile I have illustrated and described a form of construction andarrangement of parts found desirable in materializingmy invention, Iwish to include in this application all mechanical equivalents andsubstitutes thatl may fairly be considered to come within the scope andpurview ot my invention as delined in the appended claims.

Having disclosed my invention so that others maybe enabled to constructand to use the same, what I claim as new, and desire to secure byLetters Patent is:

1. In a mold: a pattern board; a hollow pattern integral therewith; acover upon said pattern; a core board; cores integral with said coreboard; and a core guide adapted to guide said cores into said pattern.

2. In a mold: a hollow pattern; cores adapted to enter said pattern; anda core guide to guide said cores into said pattern.

3. In av mold: a hollow pattern secured upon a pattern board; coressecured upon a core board, and adapted to be inserted into said pattern.

4. In a mold: a pattern board; a hollow pattern secured upon saidpattern board; a stripping` plate adapted to be placed upon said patternboard and to surround said pattern; a ask adapted to be placed upon saidstripping plate; a core board adapted to be placed upon said flask; andcores secured upon said core board and adapted to enter said pattern.

In witness whereol" I claim the foregoing as my own I` hereunto affix mysignature in the presence ot two witnesses at Portland, county otMultnomah, State of Oregon. this 26th day of Jan., 1923.

JOHN F. CASEY. lVitnesses L. E. BUF'roN,

C. F. BLAKE.

